You seem to ignore entirely that the teachers in most cases are doing exactly what the administrator want them to do.
It is a myth that administrators can't fire teachers, they don't have to, they just make their duties so bad they can't take it and they leave. Besides they don't want to fire the teachers you detest, they want to fire the teachers that think like you do.
preaching to the choir, I went from industry to teaching HS for 2 years. When I asked the math teachers why HS seniors could not read a ruler marker in 32nds on one side and decimal on the other, and had no idea how to figure which decimal marking was closest to oh say, 7/32, or why every student knew about Hiroshima, but none knew about Nanking or the Bataan Death March. Blank stares back,not real popular with the new style teachers. Although the head English teacher asked me my favorite book my response, Siddhartha, as it was about life. She hadn’t read it, so she did. She said it made her cry. And that’s what good literature should do, grab you. Not instruct you in groupthink.